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Involvement of uncoupled antenna chlorophylls in photoinhibition in thylakoids
Author(s) -
Santabarbara S.,
Neverov K.V.,
Garlaschi F.M.,
Zucchelli G.,
Jennings R.C.
Publication year - 2001
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/s0014-5793(01)02174-3
Subject(s) - photoinhibition , thylakoid , spinach , action spectrum , population , biophysics , fluorescence , chemistry , photochemistry , pigment , antenna (radio) , biology , botany , photosystem ii , photosynthesis , chloroplast , biochemistry , physics , optics , medicine , telecommunications , organic chemistry , environmental health , computer science , gene
Evidence is presented, by means of both fluorescence and action spectroscopy, that a small, spectroscopically heterogeneous population of both Chl a and Chl b molecules is present in isolated spinach thylakoids and is active in photoinhibition. The broadness of the action spectrum suggests that degraded or incompletely assembled pigment–protein complexes may be involved.